William c



w. c. STEVENS MACHINE FOR MAKING TIRE GARCASES Mar. 6, 1923.

Original'Filed' Apr. 1'7, 1915 5 sheetmsheev v I t am-c.9211

Mar. 6, 1923.

W. C. STEVENS MACHINE FOR MAKING TIRE CARCASSES 1?, 1.915 3 sheets-sheet 2 Original Filed Apr.

Patented Mar. 6, 1923.

UNITED STA'llES PATENT orrics.

WILLIAM C. STEVENS, OF AKRON, OHIO, ASSIGNOR TO FIRESTON'E TIRE AND RUBBER COMPANY, OF AKRON, OHIO, A. CORPORATION OF OHIO.

MACHINE FOR MAKING TIRE CABCASSES.

Application filed April 17, 1915, Serial No. 22,061.

To all whom it may concern:

Be it known that I, VViLLIAM U. STEVENS, a citizen of the United States, residin at Akron, in the county of Summit and tate of Ohio, have invented certain new and useful Improvements in Machines for Making Tire carcasses, of which the following 15 a specification.

In a companion patent application serlal No. 760,615, filed April 12, I913, now Patent 1,253,105, Jan. 8, 1918, I set forth a structure for the manufacture of the carcass of the outer shoes or casings of pneumatic tires. wherein the rubber impregnated fabric is formed and shaped about a revoluble core by suitable spinning or fabric pressmg rollers tilted to effect a sidewise 'tretchlng action on the fabric as it is rol ed down into place on the core. In such structure the spinning rollers are mounted 011 levers or rocking arms in such a manner that as the levers or arms rock the angles of the rollers to the core change materially and the reduction or avoidance of such objectionable feature is one of the leading objects of the present invention.

A further feature of the invention resides in so constructing and assembling the parts of the mechanism that it is unnecessary to 80 support the rollers at a tilted angle. but retaining, however, the effect of tilted rollers.

Other objects of this invention are to improve the form of stitchers and the mechanism for advancing into operative position 86 the carriage carrying the stitchers.

Other features of novelty and improve ment will become apparent to those skilled in this art from a consideration of the following detailed description of preferred mm 40 hodiments of the invention. as shown in the accompanying drawings, in which like reference numerals refer to like parts and in which Figure l, is a fragmentary elevation of the structure, and illustrates the carriage carrying the stitrhers.

Figure 2. is a longitudinal section through the central part of the improved machine.

Renewed member 2a, 1915. Serial 210. 347,685.

Figure 3, is a front elevation with the core structure omitted.

Figure 4, is a rear view of the stitcher carrying arms in the inmost posit-ion.

F lgure 5, is a longitudinal section through the improved sitchcr.

Figure 6 is a section on the line 6 -6 of Figure 2.

4 igure 7 is a view showing a modification.

In this application, I have not shown the fabric carrying or stretching mechanism or the structure for rotating, the core at slow and fast speed during the fabric stretching and applying operation and the fabric stitching or spinning operation respectively, as these mechanisms form no part of the present invention, and are separate and. dis tinct therefrom. The showing of these parts is furthermore not necessary to the understanding of the machine.

The base of the machine is formed in two parts, 1 and 2 connected to form an L- shaped plateby means of bolts 3.

On the part 2 at one side of the machine is mounted a standard 4 in the upper part of which is rotatably mounted a shaft 5 adapted to carry and rotate any preferred form of spider 6. which carries the ordinary core 7 on which the tire is formed. The shaft and core are adapted to be rotated at either fast or slow speed by any form of mechanism not shown, asis well known in the art The upper part of the hase l is foru'ied with a dove tailed guide shown in dotted lines at H in figure 3 in which is adapted to slide a hollow carriage 9, serving as a support for the stitchurs and their immediate operating mechanism The rear end of the carriage Si is provided with a tail pier-e 10 carrying on its under side a fixed nut 11.

This nut is adapted to engage the screw threaded end of a longitudinal shaft 12. whi h extends through the base 1 and is provided at its forward end with a triotion com--13 The shaft 12 is adapted to he mutated in either direction when it is de sired to feed the carriage 9 into or out of position for the stitching operation by means of two oppositely facing cone pulleys 14. These cones 14 are secured to a shaft 15, which is rotatably and slidably mounted in bearings 16 rising from the base of the machine. Shaft 15 is rotated from any other part of the machine by suitable means such for example as the sprocket chain 17. The shaft normally stands with the cones 14 out of engagement with the cone pulleys 13, but it is adapted to be moved to bring one or the other into driving engagement with the pulleys 13 by means of spanner arms 17 which engage pins 18 on the collar 19 carried by the shaft in the well known manner. The spanner arms are secured to the for ward end of a rock shaft 20 mounted in bearing 21 secured to the base of the machine. A hand lever 2-2 is fastened to the rear end of the rock shaft and provides means for throwing the shaft 12 into action.

On the upper side of the carriage 9 are formed rabbets 23 in which is slidingly mounted a plate or secondary carriage 24 which carries the stitcher arms and the knife carrying slides as will be explained later. The under side of the plate 24 has secured thereto on each side a rack'25, which are in engagement with pinions 26 secured to a transverse shaft 27 rotatably mounted in the sides of the carriage 9. Shaft 27 extends outside the carriage 9 at the side adjacent to the levers and has secured thereto a hand wheel 28, carryiu an operating handle 29. The periphery of the hand wheel is provided with a frictioned surface 30, usually rubber for machine drive as will be explained. By actuation of the hand wheel 28. the slide 24 may be advanced during the stitching operation. This may be done by hand by operator, by actuation of the hair die or may be done by the machine at fast or slow speed. I have found it advisable to feed the carriage forwardly at a relatively rapid rate during the major portion of the stitching operation, but while the fabric is being applied over the top of the bend, it is better to advance the carriage slowly as this allows the stitchcrs to pass over the bead without danger of dislodging it. and also for the purpose of securing better results in stitching over the top and the edge of the head as will be rcndily undcrstood by those familiar with tho art.

The mnchinc feed of the plutc 24 is citeded by the. following means:

hi the front for? of the carriage 1) is mounted :1 transverse shaft 31 the left hund cud of which. as vicwcd in Figure 3. is mounted my to allow a slight play in the bearing 32 on the front of the carriage $7. Th s end of the shaft carries :1 sprocket wheel 33 over which passes :1 chain 34 driven by any suitable means. 'lhc right hand end f the shaft 3[ is rotatably mounted in an eccentric hub 35 of a bearing plate or arm 36. Hub 35 is rotatably mounted in a hearing 37 on the carriage 9. The end of this shaft extends through the bearing plate and carries on the end a drive wheel or roller 38. The shaft 31 is connected by chain and sprocket wnnection 39, with a small roller 40 mounted to rotate on a pin 41 secured in the lower end of the plate 36. Such lower end of this plate also carries-a hook pin 42 to which is connected one end of a spring 43, the other end of which is'secured to a book 44 in the lower part of the carriage 9.

.The upper face of the bearing plate has secured thereto an operating handle 45, by which it may be worked.

The operation of the parts just described is briefly as follows:

The shaft 31 is given a'constantrotation by the sprocket .connection and this rotation is transmitted to the drive wheels 38 and 40. Spring 43 is so connected to the bearing plate that it maintains the handle tilted to the left a little, which position owin to the eccentric hub, holds the two wheels 38 and 40 out of contact with the surface of the hand wheel 28. When it is desired to feed the plate 24 forward at the faster speed, the handle 45 is moved toward the position shown in Figure 1, whereupon the pulley 38 is forced into driving contact with the handwheel 28, thus advancing the plate owing to the rack and gear connection 25 and 26 which advance will be relatively rapid, due to the size of the pulley 38. w hen, however, it is desired to advance the plate slowly as in stitching over thr head, the handle 45 is swung to the left, which rotates the hub 35 in the bearing 37 and brings the small pulley 40' into driving connection with the surface of the hand wheel I ()n the top of the plate 24 on each side at the front and-rear thereof, is secured a pair of o .ositelyfacing spaced over-. hanging guidg plates 46. -=Betvteeneach pair of these guides 46 is mounted a slide 47 designed to carry a knife for trimming the tiro carcass as will be described latch.

Across each pair of guides 46 is secured a transverse bridge piece 48, rotatably mountcd in which is a shaft min which issecured an arched rocking stitcher carrier 52. The upper edge of the carrier is provided with splitrlamping lugs 53, in which is secured a stitchcr carrying arm 54 provided at its forward end with u stitcher or fabric applying and pressing roller 55.

in my prior application, Patent 1,253,105, have set forth at length the ndvuntugcs which arise from a construction in which the stitchcr is oblique. to the path of the core at the point of contact of the stitchcr and lllc material. In the said appli ation I showed our machine which l had devised to embody this construction, but the machine shown therein developed certain disadvantages which it has been my purpose to overcome in the improved machine herein shown and described. In the preferred form of my invention as shown in Figures 1 to 6, 1 obtain the obliquity of the stitcher to the core not by, tilting the roller, but by elevat ing the core so that its center is above the center of the shaft 54 as indicated in the dotted line AB" in Figures 1 and 2. It will be seen by this construction that the etl ect of tilting is obtained by a much simpler construction than that shown in the former application.

In my former construction and in all other structures of tire machines of this type of. which I am aware, the axis of pivotal moremeut of the stitcher in order to pass over the sides of the core has been so located that the angle of the face of the stitcher with the plane of the core has changed as the stitcher moves inwardly. l have found that the best results are obtained With the face of the stitchers perpendicular to the plane of the core during the inward movement. and with the right angle thus formed held coin stunt.

The maintenance of this angle is obtained by arranging the axis of pivotal movement of the stitehers in such manner that the face of the stitchers will be at right angles to the plane of the core at all times during its moven'ient toward and away from the plane of the core. This is also obtained by making the axis ofthe pivotal movement parallel to the line of advance of the stitchers.

The action of the stitcher due to the combined perpendicularity of the face thereof, the tiltv to the path of movement of the material at the point of contact and the maintenance of the same angle of the stitcher to the face of a core is superior to the actinu of any arrangement of stitchers which .I have tried and secures the best results in laying the fabric about the side of the core.

ln the modification shown in Figure T. l have obtained almost as ellicient results by making a slight bend in the stitcher end of the arm 54 as indicated at 56. whereby to tilt the stitching roller. In this form I have mounted the major or horizontal portion of the arm 56 on a line with the center of the core as shown at t---]). It will be seen that in this style of structure, I have obtained the obliquity of the stitcher with the path of movement of the core by bending the stitcher arm, but, owing to the practical mpossibility or difiiculty of forging two of these arms at exactly same angle. and owing to the fact that in the pivotal movement about the axis 51, the angle of the stitcher with the plane of the core and the obliquity of the stiteher relative to the path of movement of the material varies to a slight degree owing to the bend of the arm, I do not consider this quite as uearlvperfeet as the other form shown herein. It is, however, the same for practical purposes.

The pivotal movement of the part about the axis 51 is obtained by the following means:

The stitcher carriers or rockers 5:3 are constantly urged toward one another by means of a weight 57 having in the upper end a pin 58 on which is mounted a pulley :39. A rope or cable 60 is secured at each end to the rear of one ofthe carriers 52. and passes from each point of attachment over a revoluble pulley 61 mounted on a spindle e2 carried in brackets 63 supported on the upper surface of the plate 24 on either side of a hole ()5 through which the upper end of the weight -57 is adapted to pass. The stitcher carriers are kept apart against the action of the weight by means of a link 6th one end of which is pivot-ally connected with a lug 67 integral with the stitcher carrier (32 further away from the operator as he stands at the side of the machine as shown in Figure 1. The other end oi" the link is connected pivotally to the shortend ol it boll crank lever 68, the linen oi which is fulcrumed on lug 69 integral with the nearer stitcher carrier. The movement of the stitehers in either direction is limited by lugs 95 on the base of the slltclu'r carriers which contact with the upper surface of the rear guide 46.

In Figure l are shown the slitchcrs in their extreme inward position and in Figure 3 in their extreme outward position.

By the construction just described it will be seen that the two stitchcrs are subject to a common weight and are, therefore. urged together with equal pressure In passing over the sides of the tire carc =s, the joints or splices of the plies are likely to cause jumpingor vibration of the slitehers. llundle 68 held by the operator. serves the purposebf steadyiu; the stitchers. in the operation or advance movement of the carriage. lt is also possible to vary the effe tive aw tion of the weight by iueans of this handle and to increase or decrease the pressure on the stitchers over that ex rted by the weight. The vertical arraiwcnicnt of this lover aids in the :iccomplisluuoul of this result over the previously tried horizontal lever as can be readily understood.

In order to stitch the fabric and apply it to the undei side of the head. it is necessary that the angle oi the stilcher be changed as explained more in detail in the prior application referred to. In order to do this, instead ofvmounting my stitcher directly on the arm 54. it carried on the end of a right angle bracket Gi pivotallv mounted at 70 on the end of the arm 54 which [iattened at T1 for this purpose. The other end of the hrarket 69 which projects outwardly from the arm 54 is provided with a sliding lurk pin 72. which is constantly urge-(l inwardly by a spring 73. The inner end of the pin 72 is flattened and adapted to he received in one of two notches 74, and T5 in an are shaped extension Y6 of arm 54.

\Vhen the end of the pin T53 is engaged in the notrh T4 the are of the stitrher will he perprmhenlar to the plane of the core, whirh position of the stitrher is maintained during) the greater part of the. ('HITHSS forming operation. \Vhen, however, it is desired to a iply the fabric to the inner face of the bezult the pin 72 is pulled out and the stitrlier moved around on the pivot until the pin passes into the notch T5 under the inflnenre of the sprin". The angular posi tion of the stiirher relative to {he plane of the core, and the obliquity of the stitcher relative to the path of movement of the material at the point of rontaet, are both fartors which contribute to the pert'ert application of the l'abrie. Unless the stiteher is turned so that its fare is at an arute angle to the plane of the core. it is impossible for the stiteher to net hetween the flange of the core and the head. if now. this is done without tilting the stitrher. the working edge thereof both above and below the axis will rontaet the tahrir being applied to the head. whirh will result in tearing ofi' the fabrir by the outwardly moving edge of the stitrher as fast as it is put on by the inwardly moving edge. The ii-bllunity or the tilting of the stitrher obviates this difiirulty, for by this expedient. all of the inwardly moving working edge of the Stlli'llfl' tourhes the entire inner surt'are of the head, at the same time and smoothly and evenly applies th fnhrie over the whole under snrt'are of the head.

I have found that in going over the plies if the siiteher i held rigid in the axial dirertion the o erlapping ends of the piles will be rubbed Tn 111 prior appliration above referred to. l sought to obviate this diflieult t by making the stitrher \'lil(l;il l( axially in hath ill'8atlt)lll-l. but I found that this was too nurertain and the stitvhers were apt to wobble unduly.

I have improv se? the rnnstrnrtion by the mechanism shown in Figure 5. in which the stitrher is shown as provided with a hollow hub T7. the rear of whirl: wu'ries an in turned flange T8. The stiteiier rarrying end of the hraelret (i9 is provided with a redured rylindrieal portion R0 and with a still further redured rylindriral svrew threaded end 81. A screw threaded rap 82 l:-; mounted over the end 81 and around the base is loosely mounted a washer SJ; Alll'ii is larger in diameter than the portion Rel. Between the washer and the cap is mounted a spring W In the hollow hub 7? about the part 3 and held between the shoulder formed at the endof the arm 69 and washer 83 is slidingly mounted a ball bearing 85. In the forward part of the hub 72' about the rap 82 is'mounted a second sliding ball h aring 86 the two ball bearings being spared apart by 2i collar 87. The stiteher 55 and the ball bearings are held rigidly together by a svrew threaded ring 98 secured to the stiteher face and a little below the level thereof.

By the construrtion just described it will be seen that a slight forward axial movement of the stiteher is allowed whieh is snffieient to prevent injurious rubbing of the overlapping plies.

The knives for trimming the edges of the tire rarcasses are no part of my present invention, and l. have not shown them in detail for this reason, but they are shown at 89 and each one is secured to the forward end iii a slide 47, which are freely movable in and out. This together with the opera-- tion of the hand wheel 28 gives a quirk and simple means of adjustment. The slide is locked to the plate by means of a ram latrh ti l ivoted at the forward end of earh shaft .3 under the stitrhers. the rain latrh beinglimited in its loose or unlorlring; position by a pin 96 in the stiteher 'arrier 5Q.

lla'rlnvard movement of the slide 2+ the carriage Si is limited by a set srrew 9i, arranged in the upper end of a lilill'lflt 12 seeu'red to the rear inner fare of the rarriage 9.

In the operation of the maritime a layer of i'ahrir having been applied to the rore and th rarriage 9 run up to the proper position by manipulation of the lGYPl 2:2, the stitrhrrs are brought up to the proper point on the side of the (ore by manipulating the hand wheel 23 and the lever 6H. The euro is then revolved at fast speed and the l ver 45 pressed over towards the right as shown in Figure 1. This forres the large pulley 33 in rontart with the ieriphery of the hand wheel and the slide 24 is advanced. The movement of the stitehers over the sides of film rore is steadied by the operator who holds the lever arm 68 with one hand while he presses to llie right on the lever arm 451- with the other. This operation is rontinned until the stitvher completes the forming of fahrir about the sides of the wire when the handle 45 is released stopping the advance. The operator then draws the lever 68 up separtin the stitrliers as shown in Figure I and runs the slide bark by operation of the hand Wllt'l. This series of operations is rontinued until the head is planed on the ran-ass. The first layer is placed over the Oil head and is stitched down as before until the junction of the bead and the side of the core is reached. The operator then presses the handle 45 to the left as shown in l igure 1. This action on the part of the operator causes the small pulley to come into action, which advances the stitcher at slow speed allowing it to vlimb up to the top of the head, without displacing or ininring it. It is also necessary to advance the stitcher slowly over the top of the head as owing to the small radial advance of the stitcher at this point, should it be advanced at a rapid rate. the stitchinp of the fabric over the head would be slighted. At the same time, the action of the weight may be lessened by giving a slight upward pull on the lever 68.

hen the top of the bead is reached the advance of the stiteher is stopped and it is swung around on the pivot 70 until the pin mlgage the notch 75. The lever is then pushed to the right. thn advanring the stitrher down the blllE of the head.

This series of operations is continued until the requisite number of plies is laid on the carcass. and over the head.

The etitcher having been moved back out of the way. the knives are brought to their proper position ahd locked by the cam latch 9 The slide is: then held stationary by holding the wheel 28 while the core is rotated and the knives fed inwardly by the hand wheels 93.

It is obvious that various changes and modifications might be made in the machine as shown and described without changing the scope of the invention or losing any of h the benefit thereof as set forth in the 211% pended claims.

What 1 claim is:

1. In a machine of the character described, the combination of a revoluhle core.

a fabric shaping tool, a support for said tool mounted to permit movement of the tool toward and from the side of the core in direction at rightangle; to the plane of the core, and means to cause said tool to advance across the side of the core in a -etraight line to shape and form the tire fabric to the core.

2. In a machine of the character described. the combination of a revolnble core, a fabric shaping tool. a support for said tool mounted to permit lfitklflg of the tool to ward and from the side of the core in a direotion at right angles: to the plane of the core, and means to cause said tool to traverse the side of the core to shape and form the tire fabric thereto.

3. a machine of the ciiararter described, the combination of a reroiuble core, a tire fabric shaping tool located in a plane oblique to the path of rotation of the core at the point of action of the tool on the core I anda support for said tool mounted to permit movement of the tool toward and from the side of the oore in a direction at ri 'ht. angles to the plane of the core, suhstantiiiily as described.

4. In a niarhine of the character described, the combination of a revoluble core. a tire fabric shaping roller located in a plane oblique to the path of rotation of the core at the point of action of the roller on the core, a su )port for said roller mounted to permit roc lag of the roller toward and from the side of the core in a. direction at right angles to the plane of the core.

In a machine of the character described, the combination of a revoluble core. a tire fabric shaping tool located in a plane oblique to the path of rotation of the core at. the point of action of the tool on the core, a support for said tool mounted to permit movement thereof toward and away from the side of the core in a, direction at right angles to the plane of the core, and means to cause said tool to traverse the. side of the core and shape the tire fabric thereto.

6. In a machine of the character described, the combination of a revoluble core. a tire fabric shaping roller located in. a plane oblique to the path of rotation ofthe core at the point of notion of the roller on the core. a support for said roller mounted to permit rocking (if the roller toward and from the side of the core in a. direction at right angles to the plane of the core, and. means to cause said roller to traverse the side of the core and shape the tire fabric thereto.

7. In a machine of the character described, the combination offa rcvolnble core, a tire fabric shaping tool, and a support for said tool perinittting it to more around the core while sha. )ing the fabric without changing its angle to the plane of the core.

8. In a 'machine of the character described, the combination of a revolnble core, a. tire fabric: shaping roller and a support for said roller permitting it to move around the euro while shaping the fabric without changing its angle to the plane of the core.

9. In a machine of the character deseribed, the combination of a revoluble core, a tire fabric shaping roller whose face is oblique to the path of'the material. at the to the plane of the core.

from the side of the core without changing its obliquity, and without changing its angle to the plane of the-core.

11. In a machine of the character described. the combination of a revoluble core, a tire fabric shaping tool, and a support for said tool permitting it to move around the core to shape the fabric without chang ing its angle to the plane of the core. and means to feed said tool along the side of the core.

12. In a. machine of the character de scribed, the combination of a revoluble core, a tire fabric shaping roller, a support for said roller permitting it to move around the core to shape the fabric without changing its angle to the plane of the core. and means for feeding said roller along the side of the core.

13. In a machine of the character de scribed, the combination of a revoluble core, a tire fabric shaping roller whose face is oblique to the path of the material at the point of contact, a support for said roller permitting it to move toward and from the side of the core without changing its angle to the plane of the core, and means for feeding said roller along the side of the core.

14. In a machine of the character described, the combination of a revoluble core, a tire fabric shaping roller whose face is oblique to the path of the material at the point of contact, a support for said roller permitting it to move toward and from the side of the core without changing its angle to the plane of the core and without changing its obliquit xi thereto.

15. In a machine of the character described.,thc combination of a revoluble core, a tire fabric shaping tool, a support for said tool permitting it to move around the core without changingits angle to the plane of the core, and means for feeding said tool along the side of the core the movement of said support being transverse to the line of feed.

16. In a machine of the character dcscribed, the combination of a revoluble core, a tire fabric shaping roller. a support for said roller permitting it to move around the core Without chang'in,g its angle to the plane of the core, and means to feed said roller along the side of the core. the movement of said support being transverse to the line of feed.

17. In a machine of the character de scribed, the combination of a. revoluble core. a tire fabric shaping roller Whose face is oblique to the path of the material at the point of contact, a support for said roller permitting it to move toward and from the side of the core without changing its angle and means to feed said roller along the side of the core the movement of said support being transverse to the line of feed.

18. In a machine of the character described, the combination of a revoluble core, a tire fabric shaping roller \vhose'face is oblique to the path of the material at the point-of contact, a support for said roller permitting it to move toward and from the side of the core without changing its angle to the plane of the core and without chang ing the obliquity thereof, and means to feed said roller along the side of the core, the movement of said support being transverse to the line of feed.

19. In a machine of the character described, the combination of a revoluble core, a tire fabric shaping tool, a ivoted support for said tool, and means to flied said tool in a direction parallel to the axis of said support to cause it to traverse the side of the core and shape the fabric thereto.

20. In a machine of the character described, the combination of a revoluble core, a tire fabric shaping roller, a pivoted su port for said roller, and means to feed said roller in a direct-ion parallel to the axis of said support to cause it to traverse the side of the core' and shape the fabric thereto.

21. In a machine of the character described, the combination of a revoluble core, a tire fabric shaping tool,'a pivoted support for said tool permitting the tool to move toward and from the side of the core in a. direction at right angles to the plane of the core, and means to feed said tool in a direction parallel to the axis of said support to cause it to traverse the side of the core and shape the fabric thereto.

22. In a machine of the character described. the combination of a revoluble core. a tire fabric shaping roller, :1 pivoted support permitting the roller to move toward and from the side of the core in a direction at right angles to the plane of the core. and means to feed said roller in a direction parallel to the axis of sai support to cause it to traverse the side of the core and shape the fabric thereto.

23. In a machine of the character dcscribed, the combination ofxa revoluhle core, a tire fabric shaping roller whose face is oblique to the material at the point of contact, a pivoted support for said roller, and means to feed said roller in a direction parallel to the axis of said support to cause it to traverse the side of the core whereby the obliquity is not changed.

24. In a machine of the character described, the combination of a revolnble core. a tire fabric shaping roller whose face is oblique to the path of the material. at the point of contact, a. pivoted support for said roller permitting the roller tofr'nove toward and from the side of the cord in a directim at right angles to the plane of the core, and means to feed said roller in a direction parallel to the axis of said support to cause it to traverse the side of the core whereby the obliquity is not changed.

25. In a machine of the character drsrribed, the combination of a revoluble core, a tire fabric shaping roller lorated in a, plane oblique to the path of rotation of the core at the point of action to such rollers on the core, a support for said roller mounted to permit rocking of the roller toward and from the side of the core in a direction at right angles to the plane of the core, means pressing said roller toward the side of the more, and means to cause said roller to 'aversr the side of the core to shape and apply the fabric thereto.

ill. in a machine of the character de s -ribed, the combination of a revolnhle core, a roller adapted to shape the tire fabric to tin side of the core, the plane of such roller being parallel at all times to the axis of the core, and means to cause said roller to traverse the side of the core in a direction non-radial to the core.

27- in a machine of the character desrribed, the combination of a rovoluble core, a. roller adapted to shape the tire fabric to the side of the core. the piano of said roller being parallel at all times to the axis of the core and oblique to the path of movement of the material, and means to cause said roller to tI'HYlJlf-lt the side of the core in a direction non-radial to the core. I

:28. in a .marhinr of the character described, the combination of a revoluble Core, a roller adapted to shape the tire fabric to the sideof, the core, the plane of said roller being parallel at all times to the axis of the (ore and oblique to the path of movement of the material, and means to reuse said roller to traverse the side of the core in a direction non-radial to the core whereby the obliquity remains the same.

:29. In a machine of the character de scribed, the combination of a revoluble core, a roller adapted to shape the tire fabric to the side of the fore, the plane of Said roll'er being parallel to the axis of the core, a support for said roller permitting it to move toward and from the core in a direction at right angles to the plane of the core, and means to cause said roller to traverse the side oi the core in a direction non-radial t0 the core to shape and apply the fabric to the side of the core.

30. In a machine of the character described. the combination of a revoluble core, a movable plate, horizontally arranged, pivotal supports on said plate, vertiral sli ner earriens mounted on Said pivotal supports, stitrhers on said carriers, and mea us 5,0 move said stiteher carriers toward and from one another.

31. In a machine of the character described, the eombination of a revoluble core, a movable plate, horizontally arranged pivotal supports on said plate, vertical stitcher rarrieis mounted on said pivotal supports, stitchers on said carriers, means to move said stitrher carriers toward and from one another, and hand operated means to separate said carriers.

32. in a machine of the character described, the combination of a revoluble core, a movable plate, pivotal supports on said plate, vertical stitcher carriers mounted on said pivotal supports, stitchers on Said carriers, means to move said stitcher carriers toward and from one another, and hand op erated means to separate said carriers comprising a link connected to one carrier, a bell crank le ver on the other carrier, and a pivotal eminertion between said link and said bell crank lover. I

33. In a niarhine of the character described, the combination of a revoluble core, a movable plate, horizontally arranged pivotal supports on said plate, vertical stitcber carriers mounted on said pivotal supports, stitchers on said Carriers, means to more said stitoher varriers toward and from one another, and hand operated means to separate said ('arriers comprising a link connected to one rarrier, a bell crank lever on the other carrier, and a pivotal ronnertion between said link and said bell crank lever.

34, A stitcher roller for tire making machines movable over the tire, comprising a 100 disk. a shaft for said disk, a bearing for said disk on said shaft. and means normally tending to maintain said disk in one position but permitting it to move on said shaft axially in one direction only from said 105 position.

A. stitrher roller for tire making ma chine comprisinga disk, a hub thereon, a shaft, a bearing lorated in said hub on said shaft, the bearing being movable along said 110 shaft, a shoulder on said shaft against ivhich said bearing normally rests, a cap on the outer end of said shalt, a spring located between said bearing and said cap and means to advance the stitchers over the surface of 115 the tire.

36. In an apparatus for making tire carcasses, the com ination of a revoluble core,

a base upon which the core is mounted, a, movable carriage on said base, a sliding plate 120 on said carriage, tire fabric shaping mechanism on said plate, a feed screw in said base,

a nut on said carriage contacting said feed screw and a rotatable shaft on said base, means for operating said feed screw from 125 said shai' t in either direction, means under control of the operator for connecting said shaft and said feed screw, and means for'advanrinp the plate on the carriagolduring the forming of the tire fabric on the core,

3?. In a machine of the character de scribed, the combination of a rotatable core, and nieans to shape the fabric to the side of the core. including a shaping tool, means for moving the shaping tool toward the center of the core, and a support for the tool mounted to permit lateral movement thereof with respect to the plane of the core, the axis of the tool being at all times below the axis of the core.

38. in a machine of the character described the combination of a revoluhle core, a shaping tool, means for moving said shapinz tool toward the center of the core. and :1 mountin; for said tool so that the axis thereof is parallel to but at one side of a radius of the core.

In a machine for manufacturing tires, the combination of a core, a movable cerriage, power means to move said carriage toward and away from the axis of the core, ii spinning roller on the carriage, and means to advance said spinning roller at differing speeds toward the core.

-10. In a niachine for manufacturing tires, the combination of a core, a carriage movahie in relation thereto, fabric pressing devices on the carriage and means for effecting advancing movement of the ressing devices including instrumentalities or efiectingdiffercnt speeds of advance of the pressing devices and power means to move the carriage and pressing devices away from the core.

ill. In a machine for manufacturing tires, the combination of a core, a carriage movahie in relation thereto, fabric pressing de vices on'the carriage, and means for effecting advancing movement of the pressing devices while the carriage is stationary including instrmncntalities for eiieeting tlifieielit speeds of advance of the pressing devices, and independent power means to move the carriagc and pressing device away from the core.

42. in a machine for insulting-idling tire casin s. :1 carriage, power driven mechanism for adv-aiming said carriage toward and away from the core. a sliding plate on said carriage, power actuated means to advance said plate on the carriage, and a spinning roller on said sliding plate.

'43. in a machine for manufacturing tire casings a carriage, power driven means to advance said carriage toward the axis of the core, means to intcrrupt said driging connections a secondary carriage o i said first named carriage, a spinning Milli pivot-ally mounted on said second named carriage, and. means for mo ving said rolier about its pivot to change the angie of said spinning roller with reference to the core.

4-1. In a machine for nninnfacturing tire casings, a carriage feed mechanism for said carriage, driving mechanism for said feed mechanism, means for connecting or disconnecting: said iliving mechanism from said feed mechanism, spinning rollers carried on said carriage, })i\(ii$ for said spinning rollcrs, means for maintaining said spinning rollers in one position of angularity with respect to the core. and a. deviee for movinp said spinning rollers about their pivots to change the anguhirity of the spinning rolicrs with reference to the core,

In a machine for manufacturing tire casings, a core, mechanism for shaping the fabric to the core, power operated means for advancing said mechanism over the core the speed of said power operated means being variahie at diifelent stages of advance of said mechanism, means or changing the angle. of the shaping mechanism, and power operated means for witinlrziwing the shaping niecininisni from the core.

46. A tire making machine comprising a, core, eiements for shaping the fabric to the coremeans for moving the elements toward the center of the core, menus for varying the speed oi. movement of said elements. means for changing the angle at which said elements are nesented to the core, and power operated means adapted to move said ele ments. away from the core.

WI LLIAM "EVENS, 

